Notes: Taxonomy follows Kirschner et al. (2002). A common introduction on both the east and west sides of the Cascades.
References:
» The Angiosperm Phylogeny Group. 2003. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Bot. J. Linn. Soc. 141: 399–436.